EAR-PF: Volume flux comparison using seismically derived tilt, infrasound, and gas data at Stromboli Volcano, Italy

Kathleen F. McKee博士获得美国国家科学基金会EAR博士后奖学金，在卡内基科学研究所开展研究和教育计划。本项目将利用次声、倾斜地震和天然气数据定量评估意大利Stromboli火山的输入和输出体积通量。这项调查将有助于定量地将地下变化与随后的喷发产物联系起来。火山观测站使用各种地球物理技术近实时地监测火山，以减轻火山对当地和全球社区造成的威胁。对于居住在活火山附近的人们和飞行在活火山上空的飞机来说，更好地了解监测量输入和检测量输出之间的关系，将加强火山监测，努力减少火山爆发时的人员伤亡和经济损失。PI McKee还将创建斯特龙博利的公共虚拟之旅，开发一项探索科学家如何使用声音研究地球的K-12教育活动，并培训一名地震声场技术的研究生。将使用多参数数据来约束意大利斯特隆博利火山的输入和输出体积通量。三分量宽带地震仪对倾斜很敏感。因此，PI McKee和合作者将在Stromboli部署一个地震声学网络和一个气体测量仪器（MultiGas）。PI McKee将描述和定位爆炸前的倾斜和随后的声源，以确定输入（通过倾斜）和输出（通过声学和气体数据）的体积。她还将研究倾斜和声源之间的关系，以及它们与脱气的关系，通过与MultiGas数据和永久安装的紫外线相机的二氧化硫通量进行比较。本研究选择次声确定的体积通量，因为它对可能阻碍气体量化方法的环境变化（例如云、缺乏日光和风引起的羽流方向变化）具有鲁棒性。这将提供关于斯特龙博利火山当前和未来喷发活动的重要信息，并有助于了解地下和地面过程之间的一般联系。这将是第一次使用倾斜和次声数据进行定量波动预算评估。

Dr. Kathleen F. McKee has been granted an NSF EAR Postdoctoral Fellowship to carry out research and education plans at the Carnegie Instituion for Science. This project will quantitatively assess the input and output volume flux of Stromboli Volcano, Italy using infrasound, tilt-affected seismic, and gas data. This invesgitation will contribute to the need to quantitatively link subsurface changes to the subsequent erupted product. Volcano observatories use a variety of geophysical techniques to monitor volcanoes in near-real time to mitigate the threats volcanoes pose to local and global communities. For people living near and aircraft flying over active volcanoes, the improved understanding of the relationship between monitored volume input and detected volume output will enhance volcano monitoring in an effort to minimize casualties and economic loss when eruptions occur. PI McKee will also create a public virtual tour of Stromboli, develop a K-12 education activity exploring how scientists use sound to study the earth and train a graduate student in seismo-acoustic field techniques. Multiparameter data will be used to constrain the input and output volume flux at Stromboli Volcano, Italy. Three-component, broadband seismometers are sensitive to tilt. As such, PI McKee and collaborators will deploy a seismo-acoustic network and a gas measurement instrument (MultiGas) at Stromboli. PI McKee will characterize and locate the pre-explosion tilt and subsequent acoustic sources to determine the volume input (via tilt) and output (via acoustic and gas data). She will also investigate the relationship between the tilt and acoustic sources, and how they relate to degassing through comparisons with MultiGas data and SO2 flux from a permanently installed ultraviolet camera. Infrasound determined volume flux is selected for this study, as it is robust to environmental changes (e.g. clouds, lack of daylight, and plume direction change from wind) that can hinder gas quantification methods. This will provide vital information on the current and future eruptive activity at Stromboli Volcano and aid in understanding general connections between subsurface and subaerial processes. This will be the first quantitative volatile budget evaluation using tilt and infrasound data.